Grommet

Abstract

A resilient grommet assembly useful in isolating the transfer of acoustical energy across structural connections includes a first annular portion provided with a central tubular projection in concentric deployment within a first peripheral edge and a second, mating annular portion provided with a second peripheral edge, the first edge extending to a depth greater than the second edge. The tubular projection is then inserted into a circular hole in a hanger strap and thereafter into a central opening in the second portion. A fastener then compresses the portions against the hanger and since the depth of the first edge is greater than the second edge the first edge is collapsed to a greater extent to further drive the tubular projection into the second portion.

What is claimed is: 
     
       1. A grommet assembly useful in isolating the mechanical energy transmitted through a strap suspending an article from a fastener onto which suspension is made, said strap including a circular suspension hole, comprising: a first annular, resilient fitting including a central tubular projection extending therefrom and a first peripheral edge in concentric alignment around said tubular projection, said first peripheral and said tubular projection defining a first annular cavity therebetween said tubular projection including a cylindrical enlarged portion extending beyond said first annular cavity conformed to pass through said suspension hole in said strap and a cylindrical reduced portion extending therefrom, with a shoulder extending between the enlarged end reduced portion; and   a second annular resilient fitting including a second peripheral edge extending on one side thereof around a central opening conformed to receive said reduced portion of said tubular projection and to oppose said enlarged portion thereof, said first peripheral edge extending from said first portion to a dimension greater than the dimension of said second edge around said second portion.   
     
     
       2. Apparatus according to claim 1 further comprising: flexible connection means extending between said first and second portions.   
     
     
       3. Apparatus according to claim 2 wherein: said tubular projection is conformed to receive said fastener on the interior thereof.